Mexico's government on Tuesday questioned the fairness of a 25% tariff ordered by U.S. President Donald Trump on its steel and aluminum imports, saying that Mexico buys more steel from the U.S. than it exports to its northern neighbor.

US President Donald Trump's planned 25-percent tariffs on all steel and aluminum imports will stack on the hefty duties earlier announced on Canada and Mexico, a White House official told AFP Wednesday.

Mexico will send a message to the United States regarding the 25% tariff on steel and aluminum and top officials are scheduled to speak later this week, Mexican President Claudia Sheinbaum said on Wednesday.